Goggle valve



G. HOOKHAM Dec. 8, 1953 GOGGLE VALVE Filed Oct. 26, 1949 2 Sheets-Sheet2 Q J m S Q Q S w m Ww E Q A f? Y\ 2. HF AME LI. bk A W .1 mwfi m w p kQ m; 1 1 NW. 4 mw mg z H H II l|| III IIIIL b Illlllll g Q. R Q% mw W NMa valve which consists essentially of: two short sections apart againstthe action or the springs, fixeddistanceap at least seriously impaired.Theasame conditions f fififi Patented Dec. 8, 1953 i UNITED STATESOFFICE astute oedema VALVE George Jii o London, iin'giena'. assignoi' toJoli'irMiles" &' Paitners (London) Limited, Lond 151E333; ii wfifilfiiApplication Qctober 2c, 1949, Seri'al No; mater ies-iifi iitviiiimlitatiiigejteat items ti eh it :149

lo ns. (ch ise-=94 The present invention relates to an: improved plateorgoggle valve of the eoi'n mofilt iised J for controlling the flow offluid through 'pipes ef t can b h'l relatively large diameter; ,7egllgle ia-t -isjrotatab It is common practice at the-present time; 5edoii the 'rihgfl. order to control the flow of fluid through apipe','g' 'o'ggl e plate- H is move toma'ke a gap in thepipe and i-nsertthe'g'ap res ect to the lengths of" pipe sections; a movable goggle-platenipped between the pipe sections, s rings tor v urging the pipe sectionstogether so asto nip the 2.4-. l plate; and hydraulic rains for moving.the pi e Thep'ipe sections Agnes 'a-re held 'i" a V means or when it isdesired to adjust the s'ettii'ig or the e ve w ims t ma 8 33 an'e g1anti oggleplate. v transverse'iilees such'asthdse snowmen and Such an arangement has the advantage: that 29 the valve as a whole can beassembled in the The goggiepiate Wis hiiiped eetwe entiie v we workshopand then moved transversely into posiseats 15 and IS with the aid tionin the gap, or" can be unboitedaiidmoved imilar"s'priiieseiiw'transversely within the gap, for repair, and all pipe seat-ions; y-eggta; 31 with little disturbance. three p airsofbe at; 31 {2,133 t1 t4, atre- Nevertheless, with these known arrangements, ii". abilie e' ef b lih i"; that it is not possible to removev ats'ingle spring 'for i th ox33 is shown at 36 (Figure 3); repair independently of theotherspringsand ii ielefi hfiii consist" of awe 31' and 3-8; the dependently of therams, so that whenever one former 5f m h 5 5 age n 5193755 spring has tobe repaired, the whole goggle valve E f 6f he is as St a 1 f is placedout of commissioner its functioning; is plate W d: 511

apply-ifa ram has to-be-removed'for repair; f) th valve seatsAccordingly it is an object of the present in- 'h gl jh gle'p t'e' l' Xvention to provide means whereby either a single -h d i*t fidjfki' fiiifi se spring or a single ram can be removed for rethe goggle p te thevalve seats: l'5' the I placement or repair without placing the gogglemoved apart against the action of the Sprin valve out of commission orseriously impairing its With the aid of three yd c rams which arefunction. equiangularly spaced around the pipes. One of A preferred formof the invention will now be the rams is Shown at M in the figures- Itcomdescribed with reference to the accompanying prises, as Shown mostClearly in Figure a cyldiagrammatic drawings in which inder 42 providedwith a removable cover 43 and Figure 1 is a longitudinal section througha a hr a t p1Ston'44A.44Band he part valve, 44A is housed entirelywithin the cylinder and is Figure 2' is an end elevation of the valve,partly urg'ed P hght shring 45 against the P rt 441 in Section, andwhich is formed with a nut 46 intermediate its Figure 3 is longitudinalSection. on a more length and is screw-threaded as at 41 so that it openscale, of a portion of the valve shown in the can be Screwed into andout Of e in ernally other flgur s 45 threaded piston-part 44C.

The pipe through which t fluid t be The cylinder 42 is provided with aninlet 48 and trolled passes is shown at It, IOA. A ga i ad outlet 49,and the piston part 44A is provided with in it and its ends are flangedas shown at H, the'usual annular W her.

HA to receive a similarly flanged goggle valve The right-hand side ofthe plate 40 is formed which can be moved into the gap transversely and50 With e recess Whilst the annul r piston D r bolted to the flanges Il, l IA as shown in Figure 1. 440 is formed on its left-hand end with apair of The valve comprises two short lengths of pipe i m ral spigots,one of which is shown at 52, section A and B between which is located aring seated in the recess 5|.

l2. Between the ring l2 and pipe section A is During normal operation,that is to say, when bolted an expansion joint l3 provided with a. thegoggle plate I! is nipped between the valve threads 41 treme right-handposition (with reference to Fig-, ure 3) against the action of thespring 45, so that the three-part piston tight between the plate 49 andthe baseof the piston 42.

In order to release the goggle plate, oil under high pressure isinjected through inlet 48 into the cylinder 42, whilst the outlet 49 isblocked. In this way the piston moves to the left with refer- 44A, B andC is thus 4 I claim: 1. A goggle valve for controlling the flow of fluidthrough two coaxially spaced pipe sections. comprising means for holdingadjacent ends of *thepipe sectionsiat a fixed axial distance apart, anaxially movable ring-located between the fixed ends of the pipesections, an expansion joint movably connecting said ring to one pipesection, a

transversely movable goggle plate removably engageable between the ringand the other pipe section, springs between the ring and one pipe secition to urge the ring towards the other pipe section and thereby'tightlyknitting said goggle plate between said ring-and other pipe section, and

ence to Figure 3 and forces the plate! andring 12 to the left so as torelease the valve seats 15 and I6. Meanwhile, the two-part boxes suchasv j 31, 38 are closed up against the action of the springs such-as 36which they contain. V

The reason for making each piston inthree separate parts is to enable itto be removed from the goggle valve for repair or replacement by atransverse movement with respect to the pipes. Parts 44B and 440 are,essentially, a telescopin rod and sleeve assemblywhose total length canbe varied by operation of their cooperating This is. done by screwingthe part B, with the aid of nut ffifi, into the part 440.

The light spring 45 pushes the piston part 44A to the left until it isstopped against the inside of the cylinder cover 43, Further screwing ofthe nut 46 is effective to withdraw the key spigot 52 from the keywayrecess 5| and shorten the combined length of the parts 44B and 44C untilthese two parts can be removed in a transverse direction from the valve.

Preferably, and as shown, the cylinder 42 is seated in an internallyrecessed annulus 53 which is also externally recessed to seat in acircular aperture formed in a plate 29 rigid with the pipe section B. I

In order to remove the cylinder for replacement or repair, the inlet andoutlet pipes 48 and 49 are disconnected, the two bolts 55 and 58 (seealso Figure 2) are unscrewed, the cylinder 42 is moved to the left untilthe ring 53 can be moved transversely away from the valve, and then thecylinder 42 is moved to the right through the circular aperture in theplate 54, taking with it the piston part 44A and the cover 43.

. rams engaged between the ring and the other pipe section for movingthe ring away from the said other pipe section against the action of thesprings.

2. A goggle valve as claimed in claim 1, wherein each ram is removable,transversely of the pipe sections, independently of the springs and allother rams.

3. A goggle valve as claimed in claim 2, wherein each ram comprises amulti-part, contractible piston.

4. A goggle valve as claimed in claim 1, wherein each ram comprises acylinder bearing against an annulus seated in an aperture formed in aflange on one of the pipes, said cylinder being of greater diameter thanthediameter of said ring, but being of less diameter than the diameterof said aperture so that when the ring has been moved transversely awayfrom the ram, the cylinder can be removed in an axial direction throughthe aperture in the flange.

GEORGE HOOKHAM.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,947,453 Bailey Feb. 20, 1934 1,998,080 Gerlich Apr. 16, 19351,998,081 Gerlich Apr. 16, 1935 FOREIGN PATENTS I Number Country Date324,654 Germany Nov. 20, 1918 349,813 Great Britain June 4, 1931

